Vending machine



FIG. 1 is a top and right front perspective view of a vending machine showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a front elevational view of another embodiment of our new design of FIGS. 1-2;

FIG. 4 is a right side elevational view of FIGS. 2 and 3, the left sides being substantially similar thereto.

The broken line showings of FIGS. 1-3 are environmental only and form no part of the claimed design. 

The ornamental design for a vending machine, as shown and described herein. 